Combined expansion and contraction joint



June 13, 1 935.A A. c. FISCHER I COMBINED EXPANSION AND CONTRACTIQN JOINT4 Filed May 9, 1927 ZQHZO l; @mi magg/26g 40 scribed this cannot happen,

Patented June 18,v 1935 PATENT OFFICE 2,005,139 COMBINED EXPANSION AND CONTRACTION JOINT Albert C. Fischer, Chicago, Ill., assigner to The f i Philip Carey poration of Ohio Manufacturing Company, a cor- ApplicationMay 9, 1927, Serial No.` 190,087 26 claims. (c1.v :a4-1s) l hemp, straw or any other ingredients which may l be suitably lmatted together in felted form, or

otherwise interwoven, as is customary in forming such fibrous material into continuous sheets. This vegetable material may be water-proofed i or not, as is preferred, by injecting therein any bituminous or petroleum waterproofing saturants adapted thereto, thus making the material water-` proof but not destroying the felted, matted form, which gives to the expansion joint the inherent power of compression within itself and the power to re-expand of its own accord. The use of such fibrous material prevents breakage of the joint, thus enabling it to be handled in a rough manner and still not be destroyed, whereas all solid bituminous joints, whether provided with felt sides or otherwise, become very brittle in cold weather and a minimum shock often breaks or cracks the entire joint.

Another object of my invention is to prepare a joint which is lighter in structure than solid bituminous joints, .thus effecting economy in transportation and effecting economy in the necessary amount ofsolid material needed for the expansion joint. Heretofore, the solid bituminous joints when under compression in warm weather have always oozed out of the crevice and have been flattened on the pavement by the passing traffic, so that the bituminous matter could ynot get back into the crevice, thus making a defective joint. By using a fibrous body of the type deas the material is both compressible within itself and re-expansive when the pressure is released, without oozing out of the crevice. The material of the present invention may be waterproofedfas stated before, and suitably coated in various ways to preserve its body and 'protect it against the w'ear of the trame.

Another object of my invention is to provide y 5 an improved expansion joint of compressible material, preferably fibrous matted material, having i one or more superficial depressions. formed therein adapted to-not only form interlocks with the adjacent concrete surface, but also to receive 55 therein bituminous material, and which bituminous material may be positioned so as to ow and form a bituminous seal for any cracks which `may develop above or around the expansion joint when imbedded in the concrete.

Another object of my invention is to provide 5 such/ a /expansion joint, having one or more supe'rcial depressions, atleast some of which depressions may be lled with bituminous material, whereby the adjacent sections of `the poured concrete will form a better interlock with 10 the expansion joint to prevent not only the expansion joint rising but also to lock the adjacent sections and keep them from rising.

These vand other objects of my invention will be apparent from a perusal of the specification i5 when taken in connection with the accompanying drawing, wherein,

Figure 1 isvone of the forms of my improved expansion joint showing a checkered arrangement of superficial depressions in the lateral 20 sides of the joint, and wherein the `top row of such depressions is lled with bituminous material, by which location the bituminous material may flow upwardly to form a crevice seal around the topof the joint;

Figure 2 is a section of Figure 1; Figure 3 is a modified form of my invention wherein the checkered depressions are all filled with bituminous material; and

Figure l is a section of Figure 3.A

Referring now to the formation shown in Figures 1 and 2. The drawing illustrates an expansion joint, preferably formed of compressible fibrous material, which is formedin such a manner that it may present to the opposed faces of 35 the concrete superficial depressions. These depressions are formed by rolling or forming the matted brousnmaterial between rollers, or making various superficial depressions or even holes all the way thru'the material into which the 40 concrete may be flowed in the form illustrated, i. e. the checkered depressions, such elevations and projections are uniformly and oppositely arranged so that the thickness of the expansion jointat any one point is uniform.v Thus an elevation 4 f the joint shown in Figure 2 is opposed by a depression 6. The purpose of these depressions, and particularly of the checkered formation, although other arrangements of depressions are within'the contemplation of my 50 invention-is primarily to prevent the joint from creeping out of the crevice and to allow the concrete to-form itself around the joint so as to prevent one slab risingabove the other.v These depressions, however, also form means by which the expansion joint carries bituminous material, which, under compression and particularly in hot weather will fiow to provide the seal or filling of the crevice formed, as is well known in the art.

In Figures 1 and 2, the depressions of joint 2, preferably the upper rows on each side, may advantageously be lled with bituminous material 8, and this may be in the 'form of a s olid bituminous slab. Since the top row on one side of this joint is formed of alternate projections and depressions 6 and 4 respectively, only one half of the top row on that side will be lled with bituminous material. However, since the opposite face has its top row formed with depressions and projections which are arranged alternately opposed to the projections and depressions of the rst mentioned `side, the top rows of the two opposed faces when taken as a whole will provide a substantially continuous series of bituminous slabs, which under pressure or under temperature conditions will ow upwardly to form a bituminous seal for the entire top edge of the joint.

Manifestly my'invention embraces other arrangements for forming this top edge with depressions containing bituminous sealing material. For instance, the top edge may be provided with a series of holes entirely thru the material, disposed to replace the top row, and these top holes may be filled with bituminous material to act as a seal, as hereinbefore described, and in addition the remainder of the brous material may be provided with spaced apart holes or openings to permit the concrete material to pass thru and interlock, the gist of the' invention being to provide a fibrous material having supercial depressions, or even holes or openings entirely therethru, a portion of which carries bituminous material, making a crevice seal, while the other portion permits interlock with the concrete structure.

In Figures 3 and 4 of the drawing I have shown a depressed expansion joint Ill, having preferably checkered arranged superficial depressions filled with bituminous material l2, so as to provide a smooth surface. In this instance the solid bituminous'matter lies preferably flush with the outer wall of the expansion joint.

It may be appreciated, however, that another phase of this invention, which is equally applicable to the arrangement shown in Figures l and 2, is to have the solid bituminous material 8 and I2 arranged so that its face is disposed slightly below the lateral face of the expansion joint, in other words, to provide a slight depression which is filled with this bituminous material.

This case is a continuation in part of application Serial No. 472,319, led May 25, 1921 and granted March 13, 1928 as Patent No. 1,662,567.

I claim:

1. A plastic elastic expansion joint having exterior side faces of said side faces having super n cial depressions formed directly therein, said depressions being of less depth than half the l the joint containing solid bituminous material so as to provide a sealing crown for the joint.

2. An expansion joint composed of brous material having checkered depressions on its opposite sides alternately disposed, the top row of depressions on the opposite sides being filled with solid bituminous material.

3. A plastic, elastic expansion joint having along one edge, on opposite faces superficial depressions and projections, the depressions carrying solid bituminous material and being of less depth than the. thickness of the joint.

` 4. A'plastic, elastic expansion joint of uniform thickness having its opposed faces formed with superficial depressions, certain of said depressions carrying solid bituminous material and being of less depth than the thickness ofthe joint.

5. An expansion joint of uniform thickness having its opposed faces formed with depressions arranged in checkered formation, a depression on. one face being opposed by a projection on the opposite face, the top edge of said joint having depressions lled with solid bituminous material..

6.- An expansion joint of brous material of uniform thickness, having superficial depressions formed therein arranged in checkered formation, the depression on one face being opposed by a projection on the opposite face, and all of said depressions being filled with solid bituminous material.

7. An expansion joint comprising a body of fibrous material of uniform thickness, having alternate depressions and projections arranged in checkered formation on both faces thereof, the projection on one face being opposed by a corresponding depression on the other face, and certain of said depressions being partly filled with solid bituminous material.

8. An expansion joint having its opposed sides formed of yieldable, non-metallic waterproofing materal, said.material having surface pockets formed therein and formed particularly adjacent to the top of the joint, said upper pockets carrying a mass of waterproofing material adapted to flow when the joint is subjected to pressure, whereby to seal the crevice above the joint.

9. Constructural material comprising a preformed body including a homogeneous mixture of non-metallic, compressible and expansible waterproofing material, having superficial de-4 pressions formed directly in its opposed faces, those depressions located adjacent the top edge of the joint carrying bituminous material flowable under certain conditions toward the top of the joint, the other depressions below said filled depressions being unfilled.

10. An expansion joint comprising a preformed body of waterproofing material of substantial thickness, said material being expansible andcontractible and having. its lateral opposed faces provided with superficial depressions. certain of which are located along the upper edge of the joint, and bituminous material carried in said upper depressions and in position to be contacted directly by concrete sections between which the joint is in position, said upper bituminous material being adapted to flow under pressure to fill the space above the joint.

11. An expansion joint comprising a homogeneous mixture of expansible waterprooferlI material. formed with opposed sides having' superficial depressions therein of less depth than the thickness of the joint, and waterproofed material carried directly in certain of said depressions so as to contact directly with the concrete when installed in position, and adapted to flow upwardly to seal the joint.

12. An expansion joint of preformed nature, wherein the lateral sides are formed of ex- -pansible and contractible waterproofed material, provided with superficial pockets of less depth than the thickness of the material in which they are formed, certain of the pockets being unfilled so as to provide an interlocking surface with the concrete sections, and certain other of the pockets containing waterproofing material flowable under temperature and pressure to seal the opening above the joint.

13. A preformed article `of manufacture com-4 prising a body portion recessed cn both surfaces and having retaining side portions, and a filling of bituminous material in said recesses.

14. A preformed expansion joint comprising a reinforcing body portion of substantially rigid non-bituminous material coated with a bituminous compound, said body portion being provided with enlarged .portions of substantially rigid non-bituminous material.

15. A preformed expansion joint comprising a reinforcing core of substantially rigid nonbituminous material filled with a bituminous compound, said core comprising a body portion and enlarged material-retaining portions on opposite faces of the body portion.

16. A preformed expansion joint comprising a base of substantially rigid material coated with a bituminous compound and provided on each side face with angularly disposed materialretaining sections.

17. A preformed article of manufacture including in combination, a support comprising a portion having recessed surfaces intermediate its edges in a longitudinal direction so that the said edges extend above the plane of said in'- termediate portion, and a filling in said recessed surfaces comprising bitumen.

18. A preformed expansion joint, comprising a reinforcing base of felted or molded fibrous material, filled with a bituminous compound, said base comprising a body portion, and angularly disposed material-retaining sections.

19. A preformed expansion joint, comprising a reinforcing base of felted or molded fibrous material, comprising a body portion' having a space between enlarged portions, the space between opposite ends and adjacent the body .p0rtion being filled with a bituminous composition.

20. A preformed expansion joint comprising a reinforcing body portion of substantially rigid non-bituminous material waterproofed with a bituminous compound, said body portion being provided with enlarged portions rof substantially rigid non-bituminous material.

21.'A preformed expansion joint comprising a base of substantially rigid material waterproofed with a bituminous compound and provided on each face with angularly Vdisposed material-retaining sections.

22. A prefOrmed article of manufacture comprising a body portion recessed von both side surfaces and having retaining side portions, and yieldable filling material in said recesses.

23. Prepared. commotion material comprising a sheet of felt impregnated with waterproofing material, said sheet being bodily distorted to form a multiplicity of projections extending outwardly from the plane of the sheet at one side thereof with corresponding recesses on the opposite side, without impairing the uniform thickness of the felt, to give the sheet an 'side thereof with corresponding recesses on the opposite side, without impairing the uniform thickness of the felt, to give the sheet an effective thickness greater thanthe actual 'thickness thereof and a waterproofing material lling said recesses.

25. Prepared construction material comprising a sheet of felt impregnated with waterproofing material, said sheet being bodily distorted to form a multiplicity of projections extending outwardly from the plane of the sheet at one side thereof with corresponding recesses on the opposite side, without impairing the uniform a multiplicity of projections extending eective thickness greater than the actual thickness thereof and a waterproofing material covering said recesses.

26. Prepared construction material comprising a sheet of felt provided with waterproofing material, said sheet being bodily distorted to form a multiplicity of projections extending outwardly from the plane of the sheet at one side thereof with corresponding recesses on the opposite side. without impairing the uniform thickness of the felt, to give the sheet an effective thickness greater than the actual thickness thereof and a waterproofing material covering said recesses.

ALBERT C. FISCHER.

CERTIFICATE or CORRECTION.

Patent No. 2,005,139. June 18, 1935.

ALBERT C.. FISCHER. I

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 3, second column, line 41, claim 25, for "a muitiplicity of projections extending" read thickness of the felt, to give the sheet an; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 24th day of September, A. D. 1935.

Leslie Frazer -(Seal) V Acting Commissioner of Potente. 

